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      04-24-2023, 07:50 PM   #221
zero21
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^^^ this guy is overthinking it big time. If you've seen G80/G82 automatics tested they routinely get 25+mpg highway. Some as high as 29mpg.

I have no idea why it's rated lower, but I can tell you in the real world the cars power and torque rating are more than sufficient to keep it humming along at 75-80mph and return drastically better mileage.

Edit: this is also true of the B58 motors.
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      04-24-2023, 08:18 PM   #222
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Quote:
Originally Posted by zero21 View Post
You're getting used to it

I am too, it's still high with a weird hook on it.

1-2 is embarrassing/annoying 20% of the time.
You should do the CDV delete. It will greatly improve the 1-2. Either modify yours or buy the E90 CDV. There are a few threads in the F87 and G80 forum. I got confirmation from Ron at Auto Solutions that the clutch and shifter are the same in all G8X series. I am not sure about the clutch pedal.
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      04-24-2023, 09:12 PM   #223
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Quote:
Originally Posted by zero21 View Post
^^^ this guy is overthinking it big time. If you've seen G80/G82 automatics tested they routinely get 25+mpg highway. Some as high as 29mpg.

I have no idea why it's rated lower, but I can tell you in the real world the cars power and torque rating are more than sufficient to keep it humming along at 75-80mph and return drastically better mileage.

Edit: this is also true of the B58 motors.
My g80 does 28 mpg highway.
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      04-26-2023, 11:24 AM   #224
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I bought mine with the manual transmission. I haven't had one in years and can say it is 100% the correct choice. I am really enjoying it!
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      04-29-2023, 05:44 PM   #225
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Does the G87 6MT still have the turbo lag between shifts like the f80 M3?
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      04-29-2023, 05:58 PM   #226
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Depends on if your in the power band.
Quote:
Originally Posted by TR930 View Post
Does the G87 6MT still have the turbo lag between shifts like the f80 M3?
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      04-29-2023, 09:40 PM   #227
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Quote:
Originally Posted by c1pher View Post
So that begs the question why the auto is rated 1mpg less on the highway than the manual. Seems counterintuitive.
there are more drivetrain losses with an automatic transmissions
auto also weighs more.
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      04-29-2023, 10:34 PM   #228
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Quote:
Originally Posted by Humdizzle View Post
there are more drivetrain losses with an automatic transmissions
auto also weighs more.
Those things used to be true, but generally are no longer significant with modern transmissions. Modern transmissions have locking converters so have little parasitic loss. That plus the extra gears (7 or more) and fast shifting means that automatics tend to be in more efficient gearing ratios while driving.

So in the past, sure, manuals could be more efficient than automatics. But that inverted a while back, so now autos are usually more efficient.
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      04-29-2023, 11:14 PM   #229
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Quote:
Originally Posted by Squidget View Post
Those things used to be true, but generally are no longer significant with modern transmissions. Modern transmissions have locking converters so have little parasitic loss. That plus the extra gears (7 or more) and fast shifting means that automatics tend to be in more efficient gearing ratios while driving.

So in the past, sure, manuals could be more efficient than automatics. But that inverted a while back, so now autos are usually more efficient.
What's physically there is there. Higher rotating mass of the torque converter autos contribute directly to drivetrain loss vs. a simple flywheel, clutch and 2.5L of fluid for manual transmission.
Where auto shines most is the 'coasting mode' which, ironically, disengages the drivetrain while coasting for higher fuel economy on the highways. MT is more efficient when you are actually applying throttle for the aforementioned reason.
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      04-30-2023, 12:04 AM   #230
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yup. simpler = more efficient.

the mpg also depends on how the test is conducted. the epa highway test is includes multiple accelerations and braking zones. and its done in a lab on a dyno.

but you can't simulate everyones commute. rural midwest vs LA highway commute is going to give two different mpgs. and one car might be better at steady state cruising than another.
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      04-30-2023, 02:33 AM   #231
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Even on a very high-performance gearbox like the PDK on the GT3 992 there are (slightly) more losses in the transmission due to the higher friction and absorption of the oil pump, and on a dyno the manual gearbox shows slightly more power than the PDK.
I assume the same may be true for the M2, but the difference is so minimal that it cannot be felt when driving, and the shorter ratios make the automatic feel quicker and more responsive anyway.
Also, the 7 and 8 gears lower the revs at cruising speed, hence the lower fuel consumption.
Perhaps on a dyno, at the same rpm and gear, the MT would be slightly less thirsty (nothing like the old automatic transmissions though), but it is impossible to apply this rule on the road because the difference in ratios means a different speed, hence a different drag, and so on.
That said, I would personally choose manual on the M2, while on the F87 I went straight to DKG.
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      04-30-2023, 04:02 PM   #232
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Quote:
Originally Posted by ronin13013 View Post
Depends on if your in the power band.
Not really an answer. I'll ask another way, can you stay in the boost powerband in the G87 6MT in between shifts?
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      04-30-2023, 04:40 PM   #233
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My apologies. Im coming from an e92 m3. This is my 1st turbo car.
I got 300 miles seat time. Probably not qualified to answer your question.
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Originally Posted by TR930 View Post
Not really an answer. I'll ask another way, can you stay in the boost powerband in the G87 6MT in between shifts?
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      10-17-2023, 12:12 PM   #234
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FWIW, the manual is plenty quick. 3.88 0-60 (towards end)

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      10-22-2023, 04:05 AM   #235
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Manual, for the pure engagement. Any other reason is pointless.

Auto if you must but don't give me the 0/60, mileage, service, carbon buckets as reasons.

Unless your Verstapen at Monaco you're not going to notice the difference.
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      10-22-2023, 04:40 AM   #236
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Quote:
Originally Posted by MKParris View Post
My g80 does 28 mpg highway.
I get similar, if i never step on it, it can do slightly better. But considering the power and weight of this thing, the muleage is really good.

For me, its auto. I had plenty of manuals, I enjoyed an rx8 gt decat for the high rotary revs and some blips but tbh this is my daily and if I want to shift manually, i have the paddles and fast shifting, i dont reay need the 3rd pedal to prove to myself anything anymore
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      10-22-2023, 07:10 AM   #237
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Quote:
Originally Posted by Shadak View Post
I get similar, if i never step on it, it can do slightly better. But considering the power and weight of this thing, the muleage is really good.

For me, its auto. I had plenty of manuals, I enjoyed an rx8 gt decat for the high rotary revs and some blips but tbh this is my daily and if I want to shift manually, i have the paddles and fast shifting, i dont reay need the 3rd pedal to prove to myself anything anymore
This^^^ times a BILLION vs the manual 'purist' that ruin most discussions on something literally, utterly personal. Wow - you have a manual. Thats news??? lol
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      10-22-2023, 11:51 AM   #238
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I got the auto. Always want to learn to drive a stick. Learnt driving a stick a couple times on my friends' cars for like an hour each.
But didn't have a manual car myself so never quite got enough practice to be confidently say I can drive a stick.
And different cars' clutch feel different, at least the WRX and the RSX I got to try were quite different.
So I thought about getting my G87 in a stick but since it's my daily, also it's much more power than anything I had driven, I am scared to think about leaving the dealer's parking lot onto traffic. lol
Also when I autocross with my auto, I sometime downshift too early. If I had done that in a manual then I probably had money shifted.
Didn't want to take the risk.

The truth is that it was hard to find opportunity to learn a stick when you are not driving your parents' car. Plenty of my friends worry that I break their clutch because the car is either too precious/new or too old.
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      10-22-2023, 12:36 PM   #239
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The ZF8 Auto really suits this m-car a lot
There’s nothing like quick shifts with zero loss of boost
With all the power, I want both my hands firmly on the steering wheel
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      10-22-2023, 01:34 PM   #240
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Has anyone tested the '23 vs '24 manual cars? Mine just got delivered last Friday and the shifter feels really good, nothing like other (non M) BMW manuals I drove. I kinda wonder if they changed something for this year after all the criticisms…
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      10-22-2023, 01:52 PM   #241
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Quote:
Originally Posted by baj_baj View Post
Has anyone tested the '23 vs '24 manual cars? Mine just got delivered last Friday and the shifter feels really good, nothing like other (non M) BMW manuals I drove. I kinda wonder if they changed something for this year after all the criticisms…
My 2023 manual feel is as good as anything I’ve had on non-M and M BMWs in the past.
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      10-22-2023, 02:27 PM   #242
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Quote:
Originally Posted by baj_baj View Post
Has anyone tested the '23 vs '24 manual cars? Mine just got delivered last Friday and the shifter feels really good, nothing like other (non M) BMW manuals I drove. I kinda wonder if they changed something for this year after all the criticisms…
I agree I think it’s their best to date
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